<em>@override</em>
<em>Widget</em> build(<em>BuildContext</em> <u>context</u>) {
	return Scaffold(
		body:<q>RaisedButton</q>(
			<em>color: Colors.blue</em>,
			<em>child: new Text('点击上滑弹窗', style:TextStyle(color:Colors.white))</em>,
			<i>onPressed</i>: ( ) {
				<b>showModalBottomSheet</b>(
					<i>context</i>: <u>context</u>,
					<i>builder</i>: (<em>BuildContext</em> <u>context</u>) {
						return <q>Container</q>(
							<em>height: 300.0,</em>
							<em>child: Container(</em>
								<em>height: 40.0,</em>
								<em>padding: EdgeInsets.all(8.0),</em>
								<em>child: Text('上滑弹窗', textAlign: TextAlign.center,style: TextStyle(fontWeight: FontWeight.bold,fontSize: 16.0))</em>,
							)
						);
					},
				).<b>then</b>(
					<em># 隐藏时执行</em>
					<i>(</i> <u>val</u> <i>)</i> {
						
					},
					<em># 出错时执行</em>>
					<i>onError</i>:( ){
						
					}
				);
			},
		)
	)
}